Dock



FIG. 1 is a perspective view of a dock showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is an exploded side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is an end elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

The ornamental design for a dock, as shown.